Shoe-trimming machine



' Filed March 12, 1926 2 Sheets-Sheet 2 Patented Sept. 28, 1926.

UNITED STATES JOSEPH YANNUZZ, OF READING, PENNSYLVANIA.

SHOE-TRIMIYIING MACHINE.

Application filed March 12, 1926.

This invention relates to improvements in shoe trimming machines and itpertains more particularly to machines used in shoe repairing shops, andin which shoes of all sizes and shapes are handled.

The object in my present invention is to provide a machine in which aplurality of trimming cutters or tools are operatively mounted on asingle machine, to the end that one of the trimmers will be applicableto the work about to be performed.

The invention contemplates a machine with a power shaft and a pluralityof driven shafts adapted each to carry a trimming cutter, and means forthrowing any one of these driven shafts into operable position, that is,into frictional contact with the driving Or power shaft, so that thedesired trimming cutter is quickly put into action.

The invention is more fully described in the following specification andclearly illustrated in the accompanying drawing, in which Figure 1 is afront elevation of my machine, showing one of the cutter shafts infrictional engagement with the power shaft.

Figure 2 is an end elevational view thereof.

Figure 3 is a central vertical section of the machine.

Figure 4 is a view taken on line fir-4 of Figure 3. V

Figure 5 is an enlarged section on lin 5-5 of Fig. 3.

The numeral 1 designates a pair of supports in which the entiremechanism is mounted. The numeral 2 designates a power shaft, rotatablein bearings 3 in the supports and provided with a cone-shaped drivingpulley 5, a belt pulley 6 and a power belt 7. This shaft also carries asharpening device on its one extremity, in the form of a stone or emerydisc, 9.

In the supports 1, and surrounding the aentrally mounted driving orpower shaft 2, I locate a plurality of horizontally slidable cuttershafts 10. In the drawing I have shown eight of these shafts, but thenumber may be varied.

Each of these longitudinally slidable shaftsare provided with acone-shaped enlargement 12, capable of frictionally engag ing thesurface of the cone-shaped pulley 5, each is mounted in bearings in thesupports 1 and capable of being easily slid therein Serial No. 94,287.

from side to side, and each is formed with an annular depression 15 nearone end there of, While the housing of the support 1 is formed with aseries of sleeves 16, the open ings through these sleeves registeringwith the depressions 15 in the shafts and in each of these openings Iplace a spring backed ball 18, adapted to .rest in the depression andallow the shaft to rotate, but to hold the shaft against horizontalmovement.

When one of the trimmer cutters is desired for use, the shaft 10 on theend of which the trimmer is mounted, is moved to the left, until theball 18 engages the depression 15, at which time the cone 12 will be incontact with the pulley 5 and the rotation of the power shaft will betransmitted to the trimmer cutter on the end of the shaft 10.

When the shaft 10 is no longer wanted in operative position, it is movedtothe right manually, the ball being moved against the spring back of itand allowing the shaft to be slid to neutral, position, and anothershaft 10 may be moved into engagement with the power shaft.

It is evident that in this construction, various trimmer cutters may belocated on the one machine, and, when the operator requires any one ofthem, it will not be necessary, as has been the case heretofore, toremove the cutter being. used and replace it with another, but merely toslide the one shaft back and another forward.

The numeral 20 designates a cutter holder adapted to hold a cutter 14.while being sharpened by contact with the stone 9. This holder ismounted on the upright 1 and the cutter when in position therein, willbe in position to be sharpened or ground thereby.

It may be found advisable in some cases to bring the cutter immediatelyin front of the operator, and in such cases, the shafts 10 may bemounted in rotatable supports surrounding the central power shaft, sothat the entire group may be rotated until'the desired cutter is in theforward position, when the shaft on which it is mounted is shifted asdescribed.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent is v 1. In a shoe trimming machine, a powershaft, a cone shaped friction pulley thereon, a plurality of trimmershafts each of which is formed with a cone-shaped portion adapted forfrictional contact with the pulley, said trimmer shafts being slid ablymounted for manual operation into and out of engagement with the powershaft, and spring means for holding the trimmer shafts in positionagainst horizontal movement while in engagement with the power shaft.

2. In a shoe trimming machine, a pair of uprights, a central power shaftmounted therein, a plurality of horizontally slidable trimmer shaftssurrounding said power shaft, a pulley on the power shaft, a coneshapedenlargement on each trimmer shaft capable of frictional engagement withsaid pulley and a spring backed ball contacting with each trimmer shaftto hold it in positron against horizontal movement.

3. In a shoe trimming machine, a power shaft having a cone shaped pulleythereon. a plurality of horizontally slidable trimmer shafts, eachhaving a cone-shaped enlargement thereon and mounted for engagementfriotionally with the said pulley, a trimmer carried on the one end ofeach trimmer shaft, a'depression in the opposite end of the shaft, and aspring backed ball adapted to engage said depression when the shaft isin engagement with the power shaft and hold it against horizontalmovement.

In testimony whereof I afiix my signature,

JOSEPH YANNUZZ.

